There are many different type of Main Rotor Head (MRH) for actual helicopter.This model is a Fully Articulated Type Main Rotor Head to understand the basic Helicopter Rotor function.

The purpose of this model is used as the major component of the Helicopter-Power-Train model which driven by Turboshaft Engine (TSE) and Main Gear Box (MGB) created recently. (See URLs)https://www.myminifactory.com/object/3d-print-turboshaft-engine-with-radial-compressor-and-turbine-75203https://www.myminifactory.com/object/3d-print-main-gear-box-for-helicopter-full-metal-bearing-type-75354About Helicopter-Power-Train model image, refer to the photo.

Total Net Print Time: Approx. 27HR- (Estimated as case of PLA, 0.4mm Nozzle, 0.2mm Layer Height, 40% infill and No raft and support) Note: When at actual print, each parameter may be adjusted by your experience.